The 56-year-old pioneer of hip-hop closes out The Dance SF at Mighty, on a bill that includes Motown on Mondays DJs with The Hitsville Soul Sisters, Non Stop Bhangra, J Boogie, Matt Haze with Dylan Germick of Planet Booty, DJ Pleasuremaker and DJ Alarm.

Event co-producer Haze says the 21-plus event aims to raise $30,000 for the nonprofit At The Crossroads, serving homeless youth in San Francisco’s Mission and Tenderloin. The $25 gathering includes mimosas and Bloody Marys at the bar, plus a food truck garden, silent auction, giveaways, yoga classes, dance classes and massages. The Dance SF is partly sponsored by Sol Republic, a headphones maker with whom Grandmaster Flash has an endorsement deal.

The idea of an extreme marathon-fundraiser-dance party is strange, Haze admits, but daytime dance parties are in and "SF loves weird, let's face it."

Folks with conventional schedules or families aren't out till 3 a.m. drinking, he says, but "They still want to go and dance and listen to music. It's more stimulating than a generic club night. The purpose is not to get wasted and get laid, it's to do something to better society and your community."

Haze, who moved to San Francisco seven years ago and lives on Capp Street in the Mission, says, "It's hard not to have your heart break every time I walk out of my front door. The Dance SF is a great opportunity for others who are concerned about the homeless epidemic in SF to make a difference."

Hip-hop has a long history of community boosterism, said Haze, who grew up in the Bronx.

"Flash is definitely someone that I've looked up to for a long time and the history of hip-hop is part of my personal history,” he says.

A contemporary-classic populist of a DJ who eschews genre for mood, Haze says, "I try to tell a story and connect the dots for people” whether playing punk, funk, reggae or drum and bass.

On Saturday, he adds, "I'm gonna keep it funky. I don't want to go too hard. I want to leave space for Grandmaster Flash to do his thing."